Re: ground faults
I am going to assume you are asking about the receptacles located in other than the spray booths.
If so, you will follow the requirements of Art 511.
511.1 Scope. These occupancies shall include locations used for service and repair operations in connection with self-propelled vehicles (including, but not limited to, passenger
automobiles, buses, trucks, and tractors) in which
volatile flammable liquids or flammable gases are used for fuel or power.
511.12 Ground-Fault Circuit-Interrupter Protection for Personnel. All 125-volt, single-phase, 15- and 20-ampere receptacles installed in areas where electrical diagnostic equipment, electrical hand tools, or portable lighting equipment are to be used shall have ground-fault circuitinterrupter protection for personnel.